恰有k个悬挂点的n阶双圈和三圈图的拟拉普拉斯谱半径
흡유k개현괘점적n계쌍권화삼권도적의랍보랍사보반경
The largest signless Laplacian spectral radius of connected bicyclic and tricyclic graphs with n vertices and k pendant vertices
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